of Edinburgh , Session 1885 - 86 . 
381 
material now before me a provisional arrangement of the races of 
men into two groups, according as the sacral index is below or above 
100, may be made. In constructing the following table, the propor- 
tions of the male sacrum have been especially relied on : — 
Dolichohieric 
Sacral Index below 100. 
Platyhieric 
Sacral Index above 100. 
Australians. 
Europeans. 
Bushmen. 
Hindoos. 
Hottentots. 
Negros. 
Kaffirs. 
Melanesians. 
Andamanese. 
Polynesians. 
Tasmanians. 
Guanche ? 
Malays. 
Esquimaux ? 
Ainos? 
North American Indians. 
Chinese ? 
South American Indians. 
If this table be compared with the one which I gave in my article 
on the Index of the Pelvic Brim in the Journal of Anatomy and 
Physiology , Oct. 1885, it will be seen that a dolichopellic brim is in 
many races conjoined with a dolichohieric sacrum. This is the case, 
for instance, in the Australians, Bushmen, Kaffirs, Andamanese, 
A'inos, and Malays. Again, a platypellic brim is conjoined with a 
platyhieric sacrum in Europeans, American Indians, and probably 
Guanches, Esquimaux, and Hindoos. The pelves, which I arranged 
in the mesatipellic or intermediate division, partly belong as regards 
the proportions of the sacrum, as in the JSTegros and Melanesians, to 
the platyhieric group, and partly, as in the Tasmanians, to that with 
dolichohieric proportions. As the width of the pelvic brim is 
materially influenced by the breadth of the sacrum, it was only to 
be expected that a platypellic pelvis would have a relatively wide 
sacrum, and that a dolichopellic pelvis would have a relatively 
narrow sacrum. 
When in a human pelvis the conjugate diameter of the brim is in 
excess of the transverse diameter, i.e has dolichopellic propor- 
tions, and when the proportions of the sacrum are dolichohieric, then 
in these characters it accords with the proportions of the pelvis 
in the apes and other mammals which possess five vertebrae in the 
sacrum. It is animalised or degraded in its characters, as compared 
with a pelvis which is both platypellic and platyhieric. 
